CN215580792U

CN215580792U - Motor and electric product

Info

Publication number: CN215580792U
Application number: CN202120672637.0U
Authority: CN
Inventors: 高军
Original assignee: Nidec Corp
Current assignee: Nidec Corp
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-01-18
Anticipated expiration: 2031-03-31

Abstract

The application provides a motor and an electric product. The motor has: the motor includes a rotor, a stator disposed to face the rotor in a radial direction, a bus bar holder located on one side in an axial direction of the rotor, and a casing accommodating the rotor, the stator, and the bus bar holder. A bus bar is enclosed within the bus bar holder, the bus bar having: an annular main body portion; an extension portion extending radially outward from the main body portion; and a claw portion located at a tip end of the extended portion, the claw portion having an opening facing radially inward. The extension has: a first axial extension portion extending from an outer circumferential surface of the main body portion to one axial side; and a radially extending portion extending radially outward from a tip of the first axially extending portion, the claw portion being located at the tip of the radially extending portion. According to the embodiment of the application, the structure that the bus bar extends from the bus bar holder along the radial direction is adopted, the operation space for clamping the wire is ensured, and the operation is convenient.

Description

Motor and electric product

Technical Field

The embodiment of the application relates to the field of electromechanics, in particular to a motor and an electric product.

Background

In the conventional motor structure, the distal end of the claw portion of the bus bar has an opening facing the circumferential direction.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

SUMMERY OF THE UTILITY MODEL

The inventors have found that the claw portion of the bus bar is arranged in the circumferential direction, and the opening is directed in the circumferential direction, which results in a narrow wire clamping space and is not favorable for wire clamping work. However, since the claw portion is close to the main body of the bus bar, the claw portion is likely to touch other components of the motor during the wire clamping operation along the radial direction, which affects the performance of the motor.

To solve at least one of the above problems or other similar problems, embodiments of the present application provide a motor.

According to an aspect of embodiments of the present application, there is provided a motor having: a rotor, a stator disposed to be opposed to the rotor in a radial direction, a bus bar holder located on one side in an axial direction of the rotor, and a casing accommodating the rotor, the stator, and the bus bar holder,

wherein a bus bar is enclosed in the bus bar holder, the bus bar having:

an annular main body portion;

an extension portion extending radially outward from the main body portion; and

a claw portion located at a tip of the extended portion, the claw portion having an opening facing a radially inner side,

the extension has:

a first axial extension portion extending from an outer circumferential surface of the main body portion to one axial side; and

a radially extending portion extending radially outward from a tip of the first axially extending portion, the claw portion being located at the tip of the radially extending portion.

In some embodiments, the radially extending portion is a flat plate, and the claw portion is perpendicular to the radially extending portion and extends to one side in the axial direction.

In some embodiments, the claw portion is located on one circumferential side of a tip of the radially extending portion.

In some embodiments, the jaw portion has:

a second axial extension extending axially from a circumferential side of a tip of the radial extension; and

and a bent portion bent from a radially outer end of the second axial extension portion to one side in a circumferential direction and to an inner side in a radial direction to form the opening.

In some embodiments, the number of the bus bars is plural, the plural bus bars are stacked in the axial direction, the claw portions of the respective bus bars are located in the same circumferential direction with respect to the respective radial extending portions, and the claw portions of all the bus bars are distributed at equal intervals in the circumferential direction.

In some embodiments, the claw portions of all the bus bars are located at the same axial height and are higher than the bus bar holder.

In some embodiments, the number of the bus bars is plural, and the extension portion of at least one of the plurality of the bus bars has the first axial extension portion and the radial extension portion.

According to another aspect of the embodiments of the present application, there is provided an electric product including the motor according to any one of the embodiments.

One of the beneficial effects of the embodiment of the application lies in: according to the motor provided by the embodiment of the application, the structure that the bus bar extends from the bus bar holder along the radial direction is adopted, the operation space for clamping the wire is ensured, and the operation is convenient.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of one example of a motor of an embodiment of the present application;

FIG. 2 is an axial cross-sectional schematic view of the motor shown in FIG. 1;

fig. 3 is a schematic view of one example of a bus bar of the motor of the embodiment of the present application;

fig. 4 is a schematic view of one example of a bus bar holder of the motor of the embodiment of the present application;

fig. 5 is a plan view of the bus bar holder shown in fig. 4.

Detailed Description

The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

In the embodiments of the present application, the singular forms "a", "an", and the like may include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

In the following description of the present application, for the sake of convenience of description, a direction parallel to a direction extending along the central axis O of the motor is referred to as an "axial direction"; the direction from the bottom of the motor case to the motor opening is called as "lower side" or "axial side" or "other axial side"; a direction pointing from the opening of the motor case to the bottom of the motor case is referred to as "upper" or "upper side" or "axially one side"; a radial direction centered on the central axis O is referred to as a "radial direction"; the direction near the central axis O is referred to as "radially inward" or "inboard"; the direction away from the central axis O is referred to as "radially outward" or "outboard"; the direction around the center axis O is referred to as "circumferential direction". It should be noted that these are for convenience of illustration only and do not limit the orientation of the motor during use and manufacture.

Embodiments of the present application will be described below with reference to the drawings.

Embodiments of the first aspect

The embodiment of the application provides a motor.

Fig. 1 is a schematic view of an example of a motor according to an embodiment of the present application, and fig. 2 is a schematic view of an axial cross section of the motor shown in fig. 1. As shown in fig. 1 and 2, the motor of the embodiment of the present application includes: the stator includes a rotor 10, a stator 20 arranged to face the rotor 10 in a radial direction, a bus bar holder 30 positioned on one side of the rotor 10 in an axial direction, and a cylindrical casing 40 accommodating the rotor 10, the stator 20, and the bus bar holder 30. As shown in fig. 2, the housing 40 has a bottom portion 41 and a cylindrical portion 42 extending axially downward from an outer edge of the bottom portion 41, and the specific structure and positional relationship of the above components can be referred to the related art, and the description thereof is omitted.

The above description has been made only on the structure related to the motor of the embodiment of the present application, the present application is not limited thereto, and the motor may also include other conventional structures, such as a bearing, a bearing holder, and the like, and particularly, reference may be made to the related art, and the description is omitted here.

In the present embodiment, the bus bar 31 is enclosed in the bus bar holder 30. Fig. 3 is a schematic view of one example of the bus bar 31 of the embodiment of the present application. As shown in fig. 3, the bus bar 31 has: an annular body portion 311; an extension 312 extending radially outward from the body 311; and a claw portion 313 at the extension portion 312. The claw portion 313 has an opening H facing radially inward.

In the above embodiment, as shown in fig. 3, the extension 312 has: a first axially extending portion 3121 that extends from the outer peripheral surface of the main body portion 311 to one axial side; and a radially extending portion 3122 extending radially outward from a tip end of the first axially extending portion 3121, the claw portion 313 being located at a tip end of the radially extending portion 3122.

According to the above embodiment, the wire clamping space is ensured by the claw portion 313 opened toward the radially inner side, facilitating the wire clamping work; the radial extension portion 3122 extends the distance from the claw portion 313 to the main body portion 311, so as to avoid touching the motor assembly during the wire clamping operation; in addition, the first axially extending portion 3121 further extends the distance from the claw portion 313 to the main body portion 311, and avoids touching the motor assembly during the wire clamping operation.

In the above embodiment, the radially extending portion 3122 may be a flat plate shape, and the claw portion 313 is perpendicular to the radially extending portion 3122 and extends toward one axial side. This can save space.

In some embodiments, as shown in fig. 3, the claw portion 313 is located on one circumferential side of the tip of the radially extending portion 3122 on which it is located. This is advantageous in that the gripping work is performed on each claw portion 313 at once, and the operability is improved.

In some embodiments, as shown in fig. 3, the claw portion 313 has:

a second axial extension 3131 extending axially from a circumferential side of a tip of the radial extension 3122; and

the bending portion 3132 is bent from the radial outer end of the second axial extension 3131 to one circumferential side and the radial inner side, and forms the opening H.

Therefore, the opening H faces to the radial inner side, so that the operation space of the wire clamping operation is ensured, and the wire clamping operation is facilitated.

Fig. 4 is a schematic view of an example of the bus bar holder 30 of the embodiment of the present application, and fig. 5 is a plan view of the bus bar holder 30 shown in fig. 4, showing a state in which the bus bar holder 30 is viewed from the axial upper side.

As shown in fig. 4 and 5, in some embodiments, the number of the bus bars 31 is plural, the plural bus bars 31 are stacked in the axial direction, the claw portions 313 of the respective bus bars 31 are located in the same circumferential direction with respect to the radially extending portions 3122 where they are respectively located, and the claw portions 313 of all the bus bars 31 are distributed at equal intervals in the circumferential direction. This facilitates uniform wire clamping operation of the claw portion 313, and improves operability.

In some embodiments, as shown in fig. 4, the claw portions 313 of all the bus bars 31 are located at the same axial height and are higher than the bus bar holder 30. For example, the axially lower ends of the claw portions 313 are located above the upper surface of the bus bar holder 30 in the axial direction. This ensures a sufficient space for wire clamping, and prevents the resin member of the bus bar holder 30 from being thermally melted during the welding operation.

In some embodiments, the extension 312 of at least one bus bar 31 of the plurality of bus bars 31 has the aforementioned first axial extension 3121 and radial extension 3122. The present application is not limited thereto, and since the plurality of bus bars 31 are stacked in the axial direction, in order to ensure that the claw portions 313 of the respective bus bars 31 are located at the same axial height, the extending heights of the first axially extending portions 3121 of the extending portions 312 of the respective bus bars 31 are not the same.

In some embodiments, a certain bus bar 31 does not even have the first axial extension 3121 but only has the radial extension 3122, and the working space for wire clamping is ensured only by the radial extension 3122.

It should be noted that, the structure of the motor related to the present application is only described above, and the motor may also include other conventional structures, such as the cover portion 50 shown in fig. 1, and the related art may be specifically referred to, and the description is omitted here. It is also possible to add components not shown in fig. 1 to 5 or to reduce one or more components in fig. 1 to 5. Regarding other configurations and structures of the motor, the related art can be referred to, and the description thereof is omitted here.

According to the motor provided by the embodiment of the application, the structure that the bus bar extends from the bus bar holder along the radial direction is adopted, the operation space for clamping the wire is ensured, and the operation is convenient.

Embodiments of the second aspect

Embodiments of the second aspect of the present application provide an electrical product having a motor as described in embodiments of the first aspect. Since the structure of the motor has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.

In the embodiment of the present invention, the electric product may be any electric device provided with a motor, for example, an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a household appliance such as a water dispenser, a washing machine, a sweeper, a compressor, a blower, and a blender, or an industrial device such as a pump, a conveyor, an elevator, a standard industrial universal machine, a wind power generator, a grinder, and a traction motor, or various information processing devices, or may be parts of an automobile such as an automobile electric power steering system and an electric bicycle driving system.

The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.

Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the present application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.

Claims

1. A motor, comprising: a rotor, a stator disposed to be opposed to the rotor in a radial direction, a bus bar holder located on one side in an axial direction of the rotor, and a casing accommodating the rotor, the stator, and the bus bar holder,

characterized in that a bus bar is enclosed in the bus bar holder, the bus bar having:

an annular main body portion;

an extension portion extending radially outward from the main body portion; and

the extension has:

2. The motor of claim 1,

the radially extending portion is flat, and the claw portion is perpendicular to the radially extending portion and extends to one axial side.

3. The motor of claim 1,

the claw portion is located on one side in the circumferential direction of the tip of the radially extending portion.

4. The motor of claim 3,

the claw portion has:

5. The motor of claim 1,

the number of the bus bars is multiple, the bus bars are stacked in the axial direction, the claw parts of the bus bars are located in the same circumferential direction relative to the radial extending parts where the bus bars are located, and the claw parts of all the bus bars are distributed at equal intervals in the circumferential direction.

6. The motor of claim 5,

the claw portions of all the bus bars are located at the same axial height and are higher than the bus bar holder.

7. The motor of claim 1,

the number of the bus bars is plural, and the extended portion of at least one of the bus bars has the first axial extended portion and the radial extended portion.

8. An electrical product, characterized in that it comprises a motor according to any one of claims 1 to 7.